curl --request GET \
  --url https://api.us1.shinami.com/aptos/node/v1/transactions/by_hash/{txn_hash} \
  --header 'Authorization: Bearer <token>'

{
  "type": "pending_transaction",
  "hash": "<string>",
  "sender": 6.195948399647823e+76,
  "sequence_number": "32425224034",
  "max_gas_amount": "32425224034",
  "gas_unit_price": "32425224034",
  "expiration_timestamp_secs": "32425224034",
  "payload": {
    "type": "entry_function_payload",
    "function": "0x1::aptos_coin::transfer",
    "type_arguments": [
      "<any>"
    ],
    "arguments": [
      "<any>"
    ]
  },
  "signature": {
    "type": "ed25519_signature",
    "public_key": 6.195948399647823e+76,
    "signature": 6.195948399647823e+76
  },
  "replay_protection_nonce": "32425224034"
}